---
kind: "section"
citation: "21 C.F.R. § 520.2260c"
title: "21"
number: "520.2260c"
heading: "Sulfamethazine sustained-release tablets."
url: "https://uscodex.org/cfr/21/520.2260c"
---

# §520.2260c. Sulfamethazine sustained-release tablets.

- (a) **Specifications.** Each extended-release tablet contains 8 grams sulfamethazine.
- (b) **Sponsor.** See No. 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Related tolerances.** See [§ 556.670](/cfr/21/556.670.md) of this chapter.
- (d) **Conditions of use—**
  - (1) **Amount.** 8 grams (1 tablet) per 45 pounds of body weight as a single dose.
  - (2) **Indications for use.** In calves for sustained treatment of pneumonia caused by Pasteurella spp., colibacillosis (bacterial scours) caused by Escherichia coli; and calf diptheria caused by Fusobacterium necrophorum.
  - (3) **Limitations.** Treated animals must not be slaughtered for food within 18 days after the latest treatment. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[48 FR 26763, June 10, 1983, as amended at 56 FR 50653, Oct. 8, 1991; 59 FR 22754, May 3, 1994; 61 FR 4875, Feb. 9, 1996; 79 FR 28830, May 20, 2014]

### Authority

Authority: 21 U.S.C. 360b.

### Source

Source: 40 FR 13838, Mar. 27, 1975, unless otherwise noted.

### Amendments

[48 FR 26763, June 10, 1983, as amended at 56 FR 50653, Oct. 8, 1991; 59 FR 22754, May 3, 1994; 61 FR 4875, Feb. 9, 1996; 79 FR 28830, May 20, 2014]